Twitter has recommended its 336 million users change their passwords.
Twitter said it has since fixed the issue. Although the company said there is no evidence passwords have been leaked or misused, it is urging its users to update their passwords.
“As a precaution, consider changing your password on all services where you’ve used this password,” the company tweeted.
The company protects user passwords via a process called hashing, which shows random characters in place of the actual passwords. But the detected bug stored the passwords in their original plain-text form to an “internal log.”
Twitter () did not specify how many passwords were stored there.
The company declined to comment on when the bug was discovered, how long it had been storing passwords in this manner and how many passwords were affected. But it reiterated to CNN “this is not a breach.”
Twitter is prompting users to change their passwords via a pop-up window on the site that explains the nature of the bug and links to their Settings page. READ MORE ON CNN